Consider the 2.3 MW, 690 V, 50 Hz, 1512 rpm SCIG in Case Study 3-1. The shaft of the generator is coupled to the wind turbine through a gearbox and its stator is directly connected to the grid of 690 V/50 Hz. For a given wind speed, the generator operates at the rated speed of 1516 rpm, the generator parameters are given as Table B-1. 2.3 MW, 690 V, 50 Hz squirrel cage induction generator (SCIG) parameters Generator Type SCIG, 2.3 MW, 690 V, 50 Hz Rated Output Power 2.30 MW 1.0 pu 1.0 pu Rated Mechanical Power 2.3339 MW Rated Apparent Power Rated Line to-line Voltage Rated Phase Voltage Rated Stator Current 2.59 MVA 690 V (ms) 398.4 V (rms) 2168 A (ms) 1.0 pu 1.0 pu Rated Stator Frequency Rated Power Factor 50 Hz 1.0 pu 0.888 Rated Rotor Speed Rated Slip 1.0 pu 1512 rpm -0.008 Number of Pole Pairs 2 14.74 kN m 1.0 pu (соntinued) Rated Mechanical Tarque

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Consider the 2.3 MW, 690 V, 50 Hz, 1512 rpm SCIG in Case Study 3-1. The shaft of the generator is
coupled to the wind turbine through a gearbox and its stator is directly connected to the grid of 690 V/50
Hz. For a given wind speed, the generator operates at the rated speed of 1516 rpm, the generator
parameters are given as
Table B-1. 2.3 MW, 690 V, 50 Hz squirrel cage induction generator (SCIG)
parameters
Generator Type
SCIG, 2.3 MW, 690 V, 50 Hz
Rated Oulput Power
2.30 MW
1.0 pu
1.0 pu
Rated Mechanical Power
2.3339 MW
Rated Apparent Power
Rated Line-to-line Voltage
Rated Phase Voltage
Rated Stator Current
Rated Stator Frequency
Rated Power Factor
2.59 MVA
690 V (ms)
398.4 V (rms)
2168 A (ms)
1.0 pu
1.0 pu
50 Hz
1.0 pu
Rated Rotor Speed
Rated Slip
0.888
1512 гpm
-0.008
1.0 pu
Number of Pole Pairs
2
14.74 kN m
1.0 pu
(соntinued)
Rated Mechanical Torque
Transcribed Image Text:Consider the 2.3 MW, 690 V, 50 Hz, 1512 rpm SCIG in Case Study 3-1. The shaft of the generator is coupled to the wind turbine through a gearbox and its stator is directly connected to the grid of 690 V/50 Hz. For a given wind speed, the generator operates at the rated speed of 1516 rpm, the generator parameters are given as Table B-1. 2.3 MW, 690 V, 50 Hz squirrel cage induction generator (SCIG) parameters Generator Type SCIG, 2.3 MW, 690 V, 50 Hz Rated Oulput Power 2.30 MW 1.0 pu 1.0 pu Rated Mechanical Power 2.3339 MW Rated Apparent Power Rated Line-to-line Voltage Rated Phase Voltage Rated Stator Current Rated Stator Frequency Rated Power Factor 2.59 MVA 690 V (ms) 398.4 V (rms) 2168 A (ms) 1.0 pu 1.0 pu 50 Hz 1.0 pu Rated Rotor Speed Rated Slip 0.888 1512 гpm -0.008 1.0 pu Number of Pole Pairs 2 14.74 kN m 1.0 pu (соntinued) Rated Mechanical Torque
Table B-1. Continued
Generator Type
SCIG, 2.3 MW, 690 V, 50 Hz
Rated Stator Flux Linkage
Rated Rotor Flux Linkage
Stator Wir.ding Resistance, R,
Rotor Winding Resistance, R,
Stator Leakage Inductance, L
Rotor Leakage Inductance, L,,
Magnetizing Inductance, L
Moment of Inertia, J
Inertia Time Constant, H
Base Flux Linkage, Ap
Base Impedance, Z3
Base Inductance, La
1.2743 Wb (rms)
1.2096 Wb (rms)
1.102 mn
1.497 m
1.0053 pu
0.9539 pu
0.006 pu
0.008 pu
0.111 pu
0.111 pu
3.6481 pu
0.06492 mH
0.06492 mH
2.13461 mH
1200 kg m?
5.8078 sec
1.2581 Wb (rms)
0.1338 N
1.0 pu
1.0 pu
1.0 pu
1.0 pu
0.53513 mH
Base Capacitance, CB
17316.17 µF
Note: H - (am2/(2S3)
Neglecting rotational losses of the generator, determine the following
a) The slip, and rotor mechanical and electrical speeds
b) The stator and rotor currents
c) The mechanical power and torque
d) The stator and rotor winding losses
e) The generator efficiency and power factor
f) The stator and rotor flux linkages
Transcribed Image Text:Table B-1. Continued Generator Type SCIG, 2.3 MW, 690 V, 50 Hz Rated Stator Flux Linkage Rated Rotor Flux Linkage Stator Wir.ding Resistance, R, Rotor Winding Resistance, R, Stator Leakage Inductance, L Rotor Leakage Inductance, L,, Magnetizing Inductance, L Moment of Inertia, J Inertia Time Constant, H Base Flux Linkage, Ap Base Impedance, Z3 Base Inductance, La 1.2743 Wb (rms) 1.2096 Wb (rms) 1.102 mn 1.497 m 1.0053 pu 0.9539 pu 0.006 pu 0.008 pu 0.111 pu 0.111 pu 3.6481 pu 0.06492 mH 0.06492 mH 2.13461 mH 1200 kg m? 5.8078 sec 1.2581 Wb (rms) 0.1338 N 1.0 pu 1.0 pu 1.0 pu 1.0 pu 0.53513 mH Base Capacitance, CB 17316.17 µF Note: H - (am2/(2S3) Neglecting rotational losses of the generator, determine the following a) The slip, and rotor mechanical and electrical speeds b) The stator and rotor currents c) The mechanical power and torque d) The stator and rotor winding losses e) The generator efficiency and power factor f) The stator and rotor flux linkages
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